#!/bin/bash
#Auto install mysql for centos 6.X
#author merci

#定义版本变量
mysql_version='5.6.40'
#定义mysql数据存放目录
mysql_datadir='/data/mysql'
#定义mysql安装目录
mysql_install_dir='/usr/local/mysql'
#mysql初始密码
mysql_pass='sulao.cn'

#安装基本依赖包
yum -y -q install wget install -y gcc gcc-c++ ncurses* cmake
#下载mysql源码
wget http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-5.6/mysql-${mysql_version}.tar.gz

#安装mysql
groupadd mysql
useradd -g mysql mysql -s /sbin/nologin
mkdir -p ${mysql_datadir}
chown -R mysql:mysql ${mysql_datadir}
mkdir -p ${mysql_install_dir}
tar -zxvf mysql-${mysql_version}.tar.gz
cd mysql-${mysql_version}
cmake . -DCMAKE_INSTALL_PREFIX=${mysql_install_dir}  \
-DMYSQL_DATADIR=/data/mysql  \
-DSYSCONFDIR=/etc
make && make install
cd ${mysql_install_dir}
rm -rf /etc/my.cnf >/dev/null
cp ./support-files/my-default.cnf /etc/my.cnf
#sed -i "s@^\# datadir.*\$@datadir = ${mysql_datadir}@g" /etc/my.cnf
cat > /etc/my.cnf << EOF
[client]
port = 3306
socket = /tmp/mysql.sock
default-character-set = utf8mb4

[mysql]
prompt="MySQL [\\d]> "
no-auto-rehash

[mysqld]
port = 3306
socket = /tmp/mysql.sock

basedir = ${mysql_install_dir}
datadir = ${mysql_datadir}
pid-file = ${mysql_datadir}/mysql.pid
user = mysql
bind-address = 0.0.0.0
server-id = 1

init-connect = 'SET NAMES utf8mb4'
character-set-server = utf8mb4

skip-name-resolve
#skip-networking
back_log = 300

max_connections = 1000
max_connect_errors = 6000
open_files_limit = 65535
table_open_cache = 128
max_allowed_packet = 500M
binlog_cache_size = 1M
max_heap_table_size = 8M
tmp_table_size = 16M

read_buffer_size = 2M
read_rnd_buffer_size = 8M
sort_buffer_size = 8M
join_buffer_size = 8M
key_buffer_size = 4M

thread_cache_size = 8

query_cache_type = 1
query_cache_size = 8M
query_cache_limit = 2M

ft_min_word_len = 4

log_bin = mysql-bin
binlog_format = mixed
expire_logs_days = 7

log_error = ${mysql_datadir}/mysql-error.log
slow_query_log = 1
long_query_time = 1
slow_query_log_file = ${mysql_datadir}/mysql-slow.log

performance_schema = 0

#lower_case_table_names = 1

skip-external-locking

default_storage_engine = InnoDB
innodb_file_per_table = 1
innodb_open_files = 500
innodb_buffer_pool_size = 64M
innodb_write_io_threads = 4
innodb_read_io_threads = 4
innodb_thread_concurrency = 0
innodb_purge_threads = 1
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 2M
innodb_log_file_size = 32M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120

bulk_insert_buffer_size = 8M
myisam_sort_buffer_size = 8M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1

interactive_timeout = 28800
wait_timeout = 28800

[mysqldump]
quick
max_allowed_packet = 500M

[myisamchk]
key_buffer_size = 8M
sort_buffer_size = 8M
read_buffer = 4M
write_buffer = 4M
EOF
./scripts/mysql_install_db --user=mysql
cp ./support-files/mysql.server  /etc/rc.d/init.d/mysqld
chmod 755 /etc/init.d/mysqld
chkconfig mysqld on
echo "export PATH=${mysql_install_dir}/bin:\$PATH" >> /etc/profile
#. /etc/profile

ln -s ${mysql_install_dir}/lib/mysql /usr/lib/mysql
ln -s ${mysql_install_dir}/include/mysql /usr/include/mysql
service mysqld start

#修改mysql默认密码
${mysql_install_dir}/bin/mysql -e "update mysql.user set password=password(\"${mysql_pass}\") where user='root';"
${mysql_install_dir}/bin/mysql -e "flush privileges;"
${mysql_install_dir}/bin/mysql -uroot -p${mysql_pass} -e "drop database test;"
${mysql_install_dir}/bin/mysql -uroot -p${mysql_pass} -e "reset master;"

service mysqld restart